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Quaternary terrestrial stratigraphic correlations between the Levant and the Circum-North Atlantic region: current knowledge and constraints

Abdul Sahib A. Lateef
Studia Quaternaria | 2003 | Vol.20 | 61-72
Keywords Stratigraphic correlation paleoclimates environmental inhomogeneity Bekaa Valley
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Abstract

Quaternary paleoclimatic signals from the Levant have been frequently correlated with the most widely used stratigraphic divisions of high latitudes. In this article, relevant data, underlying concepts and new information are critically reviewed to highlight sources of uncertainty. Comparison between four sites from the Bekaa Valley demonstrate the problem of correlations and paleoenvironmental diversity of the region.
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Authors and Affiliations

Abdul Sahib A. Lateef

Barrier Inhomogeneity of Pt/GaN Junctions with a Low-Temperature ALD Grown ZnO Interlayer

Hogyoung Kim Ye Bin Won Byung Joon Choi
Archives of Metallurgy and Materials | 2024 | vol. 69 | No 2 | 459-463 | DOI: 10.24425/amm.2024.149766
Keywords ZnO interlayer GaN Inhomogeneous Schottky barrier Interface states
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Abstract

Semiconducting GaN can realize high performance electronic and power devices owing to its high electron mobility and thermal conductivity where good metal-semiconductor contact is prerequisite. In this work, using thermal atomic layer deposition (ALD), ZnO interlayer was grown at 80°C on GaN and the Pt/ZnO/GaN heterojunctions were electrically characterized. The analyses on the current–voltage (I–V) and capacitance (C–V) data showed that the forward I–V conduction was involved with the inhomogeneous Schottky barrier. The higher density of interface states from I–V data than that from C–V data was attributed to nonuniform distribution of interface states. In addition, high density of interface states caused localized high electric field, caused higher Poole Frenkel emission coefficients than the theoretical one.
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Authors and Affiliations

Hogyoung Kim
1
ORCID: ORCID
Ye Bin Won
2
ORCID: ORCID
Byung Joon Choi
2
ORCID: ORCID
  1. Seoul National University of Science and Technology, Department of Visual Optics, Seoul 01811, Korea
  2. Seoul National University of Science and Technology, Department of Material Science and Engineering, Seoul 01811, Korea

Investigation of Strain Inhomogeneity in Hexa-ECAP Processed AA7075

Serkan Öğüt Hasan Kaya Aykut Kentli Kerim Özbeyaz Mehmet Şahbaz Mehmet Uçar
Archives of Metallurgy and Materials | 2021 | vol. 66 | No 2 | 431-436 | DOI: 10.24425/amm.2021.135875
Keywords Strain Inhomogeneity Hexa-ECAP ECAP SPD AA7075
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Abstract

Severe Plastic Deformation (SPD) techniques have been used by researchers for last three decades in order to obtain Ultra-Fine Grained (UFG) materials. Equal Channel Angular Pressing (ECAP) is preferred more than other SPD techniques thanks to its high performance and practicability. Hexa Equal Channel Angular Pressing (Hexa-ECAP) – modified ECAP technique which enables to apply ECAP routes for cylindrical samples properly – was preferred in this study. Within the objective of this study, the effects of coefficient and ram velocity on the mean effective strain and strain inhomogeneity of Hexa-ECAP processed Al7075 aluminium alloy were investigated. Also, the effects of ram velocity and friction coefficient on hardness homogeneity were investigated benefitting from the similarity between the hardness distribution and the strain distribution.
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Authors and Affiliations

Serkan Öğüt
1
ORCID: ORCID
Hasan Kaya
2
Aykut Kentli
1
Kerim Özbeyaz
1
Mehmet Şahbaz
3
Mehmet Uçar
4
  1. Marmara University, Faculty of Engineering, Mechanical Engineering Department, Istanbul – Turkey
  2. Kocaeli University, Asım Kocabıyık Vocational School, Machine and Metal Technology Department, Kocaeli – Turkey
  3. Karamanoğlu Mehmetbey University, Faculty of Engineering, Mechanical Engineering Department, Karaman, Turkey
  4. Kocaeli University, Faculty of Technology, Automotive Engineering Department, Kocaeli – Turkey

The inhomogeneity of neostandard features and Italian L2/LF teaching

Agnieszka Latos
Kwartalnik Neofilologiczny | 2023 | No 4 | 546-562 | DOI: 10.24425/kn.2023.148371
Keywords Italian neostandard variety linguistic features inhomogeneity Italian L2/FL teaching
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Abstract

The objective of this paper is twofold. First, it aims at problematizing the inhomogeneity of linguistic features belonging to the so-called neostandard Italian, often presented as a monolithic inventory of linguistic forms and phenomena. Second, it intends to set such a linguistic variety in the context of Italian language pedagogy, still strongly anchored to the normative grammar and to the canons of standard Italian. Specifically, some rapidly consolidating neo-standard traits will be examined under the following aspects: structural and semantic complexity, functional and communicative value and extension in today’s usage.
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Authors and Affiliations

Agnieszka Latos
1
ORCID: ORCID
  1. Uniwersytet SWPS, Warszawa

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